System for preparing bone for receiving an implant

Abstract

A system for cutting bone includes a cutting guide including a metal block having a guide surface provided thereon, and an oscillating tip saw having a cutting blade assembly extending from a distal end thereof. At least one element of the cutting blade assembly is magnetic for generating a magnetic attraction to the guide surface of the cutting guide so as to control the orientation of the cutting blade assembly during a bone cutting procedure. The cutting guide may also be magnetic.

1 . A system for cutting bone comprising:
 a cutting guide having a guide surface;   a cutting instrument including a cutting blade, wherein at least one element of said cutting instrument is magnetic for magnetically attracting said at least one element to said guide surface of said cutting guide.   
   
   
       2 . The system as claimed in  claim 1 , wherein said cutting guide is made of metal. 
   
   
       3 . The system as claimed in  claim 2 , wherein said magnetic cutting guide is magnetic. 
   
   
       4 . The system as claimed in  claim 1 , wherein said at least one element comprises a magnetic saw blade. 
   
   
       5 . The system as claimed in  claim 1 , wherein said cutting instrument comprises an oscillating tip saw and said at least one magnetic element is a guide bar assembly that supports an oscillating cutting blade. 
   
   
       6 . The system as claimed in  claim 5 , wherein said oscillating cutting blade is non-magnetic. 
   
   
       7 . The system as claimed in  claim 1 , wherein said cutting instrument comprises an oscillating tip saw including a cutting blade assembly having a magnetic portion and a non-magnetic portion. 
   
   
       8 . The system as claimed in  claim 7 , wherein said magnetic portion of said cutting blade assembly is non-oscillating and said non-magnetic portion of said cutting blade assembly is adapted for selectively oscillating. 
   
   
       9 . The system as claimed in  claim 1 , wherein said cutting instrument comprises:
 a guide bar assembly having a proximal end and a distal end;   a cutting blade pivotally mounted to said guide bar assembly, wherein said cutting blade projects beyond the distal end of said guide bar assembly;   at least one drive element coupled with said cutting blade for selectively oscillating said cutting blade.   
   
   
       10 . The system as claimed in  claim 9 , wherein said cutting blade has cutting teeth. 
   
   
       11 . The system as claimed in  claim 9 , wherein said guide bar assembly is magnetic and said cutting blade is non-magnetic. 
   
   
       12 . The system as claimed in  claim 11 , wherein said at least one drive element is non-magnetic. 
   
   
       13 . The system as claimed in  claim 9 , wherein said guide bar assembly and said cutting blade are magnetic and said at least one drive element is non-magnetic. 
   
   
       14 . The system as claimed in  claim 13 , wherein said cutting blade has cutting teeth. 
   
   
       15 . The system as claimed in  claim 9 , wherein said guide bar assembly comprises:
 a magnetic bottom bar;   a magnetic top bar spaced from said bottom bar;   a non-magnetic inner bar disposed between said bottom bar and said top bar, wherein said cutting blade projects from distal ends of said bottom bar and said top bar.   
   
   
       16 . The system as claimed in  claim 15 , wherein said at least one drive element comprises a pair of non-magnetic drive rods that extend between said bottom bar and said top bar along opposite lateral sides of said inner bar. 
   
   
       17 . The system as claimed in  claim 1 , wherein said cutting instrument comprises:
 a housing;   a motor located in said housing and coupled with said cutting blade;   an actuator in communication with said motor for selectively activating said motor for driving oscillating movement of said cutting blade.   
   
   
       18 . The system as claimed in  claim 17 , further comprising a drive shaft connected with said motor and coupled with said cutting blade, wherein said drive shaft drives oscillating movement of said cutting blade when said motor is activated. 
   
   
       19 . A system for cutting bone comprising:
 a cutting guide including a metal block having a guide surface provided thereon;   an oscillating tip saw having a cutting blade assembly extending from a distal end thereof, wherein at least one element of said cutting blade assembly is magnetic for generating a magnetic attraction to said guide surface so as to control the orientation of said cutting blade assembly during a bone cutting procedure.   
   
   
       20 . The system as claimed in  claim 19 , wherein said cutting blade assembly comprises a magnetic guide bar assembly and a non-magnetic cutting blade pivotally connected with said magnetic guide bar assembly. 
   
   
       21 . The system as claimed in  claim 20 , wherein said cutting blade assembly further comprises at least one non-magnetic drive element extending through said guide bar assembly for driving oscillating movement of said cutting blade. 
   
   
       22 . A system for cutting bone comprising:
 a plurality of cutting guides having different sizes, each said cutting guide including a metal block having a guide surface provided thereof;   an oscillating tip saw including a cutting blade assembly extending from a distal end thereof, said cutting blade assembly having an oscillating cutting blade provided at a distal end thereof, wherein at least one element of said cutting blade assembly is magnetic for generating a magnetic attraction between said at least one magnetic element and said guide surfaces of said cutting guides.   
   
   
       23 . The system as claimed in  claim 22 , wherein said metal blocks are magnetic. 
   
   
       24 . The system as claimed in  claim 22 , wherein said oscillating tip saw comprises:
 a housing;   a motor disposed in said housing and coupled with cutting blade assembly for selectively driving said oscillating cutting blade; and   an actuator provided on said housing and coupled with said motor for activating said oscillating cutting blade.   
   
   
       25 . A system for cutting bone comprising:
 a cutting guide having a guide surface;   a cutting instrument including an oscillating portion and a non-oscillating portion;   said oscillating portion of said cutting assembly being non-magnetic;   said non-oscillating portion of said cutting assembly being magnetized for attracting said non-oscillating portion of said cutting assembly to said guide surface of said cutting guide for guiding said cutting assembly over said guide surface when cutting bone.   
   
   
       26 . The system as claimed in  claim 25 , wherein said cutting instrument comprises an oscillating tip saw. 
   
   
       27 . The system as claimed in  claim 25 , wherein said oscillating portion includes a cutting blade having cutting teeth. 
   
   
       28 . The system as claimed in  claim 25 , wherein said oscillating portion of said cutting instrument is non-magnetic.